| Sultartangalón | |
| Location: | Highlands of Iceland |
| Lake Type: | reservoir |
| Inflow: | Þjórsá and Tungnaá |
| Outflow: | Þjórsá |
| Basin Countries: | Iceland |
| Area: | 20km2 |
| Volume: | 109GL |
| Elevation: | 297m (974feet) |
| Pushpin Map: | Iceland |
| Pushpin Map Alt: | Location of Sultartangalón in Iceland. |
The lake Sultartangarlón (pronounced as /is/) is situated in the Highlands of Iceland to the north of the volcano Hekla. It is a reservoir of the river Þjórsá. Its surface area is 20 km2. Many reservoirs have been constructed and are being constructed in the highlands, which raises questions in Icelandic society about the roles and interests of industry and environment.